for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com 1 - 1 1 comparators - smt t he h mc 675l p 3e is a s ige monolithic, ultra fast comparator which features reduced swing ( rs ) cm l output drivers and latch inputs. t he comparator supports 10 gbps operation while providing 100 ps propagation delay and 60 ps minimum pulse width with 0.2 ps rms random jitter ( r j). o verdrive and slew rate dispersion are typically 10 ps, making the device ideal for a wide range of applications from at e to broadband communications. t he reduced swing cm l output stage is designed to directly drive 400 mv into 50 o hms terminated to gnd. t he h mc 675l p 3e features high speed latch and programmable hysteresis and may be confgured to operate in either latch mode, or as a tracking comparator. general description hmc675lp3e features functional diagram equivalent input bandwidth: 10 ghz p ropagation delay: 100 ps o verdrive & s lew r ate dispersion: 10 ps m inimum p ulse width: 60 ps r esistor p rogrammable hysteresis differential latch c ontrol p ower dissipation: 100 mw rsp e c l and rs e c l versions a vailable 16 lead 3x3 mm smt p ackage: 9 mm 2 typical applications t he h mc 675l p 3e is ideal for: ? ate applications ? high speed instrumentation ? digital receiver systems ? pulse spectroscopy ? high speed trigger circuits ? clock & data restoration electrical specifcations, t a = +25 c , vcci= +3.3 v, vcco = 0 v, vee = -3 v, v term = 0 v p arameter c onditions m in. t yp. m ax units input voltage r ange -2 2 v input differential voltage -1.75 1.75 v input o ffset voltage 5 mv input o ffset voltage, t emperature c oefficient 15 v / c input bias c urrent 15 u a input bias c urrent t emperature c oefficient 50 n a / c input o ffset c urrent 4 a input impedance 50 c ommon m ode input impedance 350 k differential input impedance 15 k a ctive gain 43 db c ommon m ode r ejection r atio 80 db hysteresis r hys = 1 mv 10 ghz latched comparator with rscml output stage v01.0811
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com comparators - smt 1 1 - 2 hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage latch enable characteristics p arameter c onditions m in. t yp. m ax units latch enable input impedance each p in 8 k latch to o utput delay, t p l o l , t p l o h v o d = 200 mv 85 ps latch m inimum p ulse width, t p l v o d = 200 mv 20 ps latch enable input r ange v o d = 200 mv 1.6 2.4 v latch s etup t ime, t s v o d = 200 mv 45 ps latch hold t ime, t h -42 ps dc output characteristics, with 50 to gnd p arameter c onditions m in. t yp. m ax units o utput voltage high level, voh -10 0 mv o utput voltage low level, vol -420 -400 -380 mv o utput voltage differential s wing 410 400 380 mv ac performance p arameter c onditions m in. t yp. m ax units p ropagation delay - t p d , t p dl , t p dh v o d = 500 mv 70 100 130 ps p ropagation delay, t emperature c oefficient 0.45 ps / c p ropagation delay s kew ( r ising to falling t ransition) v o d - 500 mv 10 ps v o d dispersion 50 mv < v o d < 1 v 10 ps t p d vs. c ommon m ode dispersion, -1.75 v for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com 1 - 3 1 comparators - smt hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage dispersion vs. overdrive voltage propagation delay vs. common mode [1] output voltage vs. temperature eye diagram comparator hysteresis vs. rhys control resistor [1] vcci = 3.3 v, vcc0 = 0, vee = -3 v, v t e rm = 0 -1 1 3 5 7 9 11 0 10 20 30 40 50 60 70 80 90 100 rising edge falling edge dispersion (ps) overdrive voltage (mv) -5 -2.5 0 2.5 5 7.5 10 12.5 15 -2 -1.5 -1 -0.5 0 0.5 1 1.5 2 rising edge falling edge t pd common mode voltage (mv) -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0 0.1 -45 -32 -19 -6 7 20 33 46 59 72 85 voh vol voltage (v) temperature (c) 0 5 10 15 100 1000 10000 hysteresis (mv) resistance (ohm)
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com comparators - smt 1 1 - 4 hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage timing diagram s ymbol t iming description t p dh input to output high delay p ropagation delay measured from the time the input signal crosses the reference ( the input offset voltage) to the 50% point of an output low-to-high transition. t p dl input to output low delay p ropagation delay measured from the time the input signal crosses the reference ( the input offset voltage) to the 50% point of an output high-to-low transition. t p l o h latch enable to output high delay p ropagation delay measured from the 50% point of the latch enable signal low-to-high transition to the 50% point of an output low-to-high transition. t p l o l latch enable to output low delay p ropagation delay measured from the 50% point of the latch enable signal low-to-high transition to the 50% point of an output high-to-low transition. t h m inimum hold time m inimum time after the positive transition of the latch enable signal that the input signal must remain unchanged to be acquired and held at the outputs. t p l m inimum latch enable pulse width m inimum time that the latch enable signal must be high to acquire an input signal change. t s m inimum setup time m inimum time before the positive transition of the latch enable signal that an input signal change must be present to be acquired and held at the outputs. t r o utput rise time a mount of time required to transition from a low to a high output as measured at the 20% and 80% points. t f o utput fall time a mount of time required to transition from a high to a low output as measured at the 20% and 80% points. v o d voltage overdrive difference between the input voltages v in p and v inn- timing descriptions
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com 1 - 5 1 comparators - smt hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage t he h mc 675l p 3e is a latched c omparator with 10 ghz equivalent input bandwidth. t he device is comprised of three blocks: 1) a n input amplifer, 2) a latch, and 3) a n rscm l o utput buffer. t he latching circuit is level sensitive, and consists of a single high-speed latch. t he h mc 675l p 3e comparator supports 10 gb/s operation. t he minimum input data latching pulse width is 60 ps. t he h mc 675l p 3e operates in either t rack ( t ransparent) m ode, where the output follows the logical value of the input, or the latch (hold) m ode, where the output value is held to the logical value of the comparison result of the input just prior to (le - le_bar) going hi. t rack m ode operation is selected by either 1) (le - le_bar) l o , or 2) le and le_bar inputs foating. latch m ode is selected by (le - le_bar) hi. t he input impedance of the le and le_bar inputs is 8 k ohms, but these inputs can be terminated with 50 ohm external resistors if desired. when d c coupled, the clock inputs operate at an input common mode voltage of 2 v. in this case, any termination resistors would ideally be returned to 2 v. if the clock is ac coupled to the device, the input termination resistors can be returned to ground. operational description
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com comparators - smt 1 1 - 6 absolute maximum ratings ele ctrostat ic s en s i t ive devi c e o b s e r ve h a ndling pr e ca u t i o n s input s upply voltage (vcci to gnd) -0.5 v to +4 v o utput s upply voltage (vcco to gnd) -0.5 v to +4 v p ositive s upply voltage differential (vcci - vcco) -0.5 v to +3.3 v input voltage -2 v to +2 v differential input voltage -2 v to +2 v input voltage, latch enable -0.5 v to vcci +0.5 v a pplied voltage (hy s ) vee to gnd m aximum input c urrent 1 m a o utput c urrent 20 m a junction t emperature 125 c c ontinuous p diss ( t = 85 c ) (derate 43.5 mw/ c above 85 c ) 1.74 w t hermal r esistance ( r th) (junction to lead) 23 c /w s torage t emperature -65 c to +150 c o perating t emperature -40 c to +85 c e s d s ensitivity (hb m ) c lass 1 a hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage outline drawing n ot e s : 1. le a df ram e mat e r i a l: copp e r a ll o y 2. di m en s i o n s ar e in in c he s [ m illi m e t e rs ] 3. le a d spac ing to le ra n c e i s n o n- c u m ul at ive 4. pa d bu rr leng t h s h a ll be 0.15 mm ma xi m u m . pa d bu rr heigh t s h a ll be 0.05 mm ma xi m u m . 5. pac k a ge w arp s h a ll n ot ex c eed 0.05 mm. 6. a ll g ro und le a d s m u st be so lde r ed to pc b r f g ro und. 7. r efe r to hi tt i t e app li cat i o n n ot e f or s ugge st ed l a nd patt e r n 8. pa ddle m u st be so lde r ed to vee.. p art number p ackage body m aterial lead finish ms l r ating p ackage m arking [2] h mc 675l p 3e r oh s -compliant low s tress injection m olded p lastic 100% matte s n ms l1 [1] h675 xxxx [1] m ax peak refow temperature of 260 c [2] 4-digit lot number xxxx package information
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com 1 - 7 1 comparators - smt hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage p in number function description interface s chematic 1 v tp t ermination resistor return pin for vp input. 2 in p non-inverting analog input 3 inn inverting analog input 4 v t n t ermination resistor return pin for vn input 5, 16 vcci p ositive supply voltage input stage. 6 le latch enable bar input pin, inverting side. r efer to the o perational description for more details. 7 le latch enable bar input pin, non-inverting side. r efer to the o perational description for more details. 8 n/ c p in is not connected inside the package. c onnect package pin to gnd for improved noise. 9, 12 vcco p ositive supply voltage for the output stage. 10 q inverting output. q bar is at logic low if the analog voltage at the non-inverting input, in p , is greater than the analog voltage at the inverting input, inn, provided that the comparator is in compare mode. r efer to the o perational description for more details. 11 q non-inverting output. q is at logic high if the analog voltage at the non-inverting input, in p , is greater than the analog voltage at the inverting input, inn, provided that the comparator is in compare mode. r efer to the o perational description for more details. 14 hy s hysteresis c ontrol pin. t his pin should be left disconnected for zero hysteresis. c onnect to vee with a resistor to add the desired amount of hysteresis. r efer to hysteresis graph to determine the correct sizing of r hys hysteresis control resistor. 13 vee negative power supply, -3 v. 15 rt n r eturn for e s d protection. p ackage base exposed paddle must be connected to vee. pin descriptions
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com comparators - smt 1 1 - 8 evaluation pcb front side back side hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com 1 - 9 1 comparators - smt hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage t he circuit board used in the application should use r f circuit design techniques. s ignal lines should have 50 o hm impedance while the pack - age ground leads should be connected directly to the ground plane similar to that shown. a sufficient number of via holes should be used to connect the top and bottom ground planes in order to provide good r f grounding to 25 ghz. t he evaluation circuit board shown is available from hittite upon request. item description j1 8 p os. vertical t in j2 - j7 2.92 mm 40 ghz jack j8 t erminal s trip, s ingle r ow 3 p in smt j p 1, j p 2 2 p os. vertical t in c 1 - c 3, c 5, c 6, c 8 - c 10 100 pf c apacitor, 0402 p kg. c 4, c 7, c 11 330 pf c apacitor, 0402 p kg. c 11 - c 13 4.7 f t antalum tp 1 - tp 4 d c p in, s wage m ount u1 h mc 675l p 3e c omparator pc b 125929 evaluation pc b [1] r eference this number when ordering complete evaluation pc b [2] c ircuit board m aterial: r ogers 4350 or a rlon 25f r list of materials for evaluation pcb 125932 [1] application circuit
for price, delivery and to place orders: hittite microwave corporation, 20 alpha road, chelmsford, ma 01824 phone: 978-250-3343 fax: 978-250-3373 order on-line at www.hittite.com application support: phone: 978-250-3343 or apps@hittite.com comparators - smt 1 1 - 10 notes: hmc675lp3e v01.0811 10 ghz latched comparator with rscml output stage
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